THE world's biggest pit bull cuddles up to his adorable new litter – valued at a whopping half-a-million dollars. The eight puppies were fathered by gentle giant Hulk, who weighs in at a huge 12 stone. And even though his owners say his bite could 'snap a man's arm like a toothpick', here he shows off his softer side by nuzzling and licking his new brood. The eight pups could collectively command $500,000 (£320,000) if they go through owner Marlon Grennan’s training school to become elite protection dogs. And there are even hopes one of the new batch could one day grow big enough to steal their father's crown. Hulk, who made international headlines when he was unveiled earlier this year, has also been in training to become a protection dog at Dark Dynasty K9s in New Hampshire, USA. The business supplies protection dogs to high-profile celebrities, billionaires and wealthy professionals – as well as law enforcement around the world.